CN113602939A - Detection method suitable for detecting air pressure in running car of high-speed elevator - Google Patents
Detection method suitable for detecting air pressure in running car of high-speed elevator Download PDFInfo
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- CN113602939A CN113602939A CN202110813279.5A CN202110813279A CN113602939A CN 113602939 A CN113602939 A CN 113602939A CN 202110813279 A CN202110813279 A CN 202110813279A CN 113602939 A CN113602939 A CN 113602939A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
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- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Elevator Control (AREA)
Abstract
The invention provides a detection method suitable for detecting air pressure in a running car of a high-speed elevator. The detection method comprises the following steps: acquiring standard parameters of the geographical position of the high-speed elevator; respectively measuring actual measurement air pressure values in the elevator car when the high-speed elevator is at different travel heights under the conditions of light load and full load of the elevator car; calculating the air pressure deviation generated in the measuring process according to the standard parameters; and correcting the actually measured air pressure value according to the air pressure deviation to obtain a corrected air pressure value. According to the invention, the actual measurement air pressure values under the conditions of light load and full load of the lift car are respectively measured, and the actual measurement air pressure values are corrected according to the air pressure deviation, so that a more accurate corrected air pressure value in the lift car can be obtained, and the air pressure in the lift car is further adjusted based on the corrected air pressure value, so that the discomfort of passengers when riding a high-speed elevator is relieved.
Description
Technical Field
The invention relates to the field of air pressure detection in a high-speed elevator car, in particular to a detection method suitable for detecting air pressure in a running car of a high-speed elevator.
Background
With the continuous emergence of high-rise and super high-rise buildings, high-speed elevators and ultrahigh-speed elevators are applied more and more in practical projects. For high-speed elevators with a lifting speed of more than 5m/s, passengers in elevator cars lifting for long distances often have an in-ear choking feeling due to the fact that air pressure in the cars running at high speed suddenly changes. Also, changes in air pressure in high-speed elevators can affect the hearing ability and the tympanometry of the occupants, causing the occupants to experience a certain degree of discomfort. Therefore, a method for detecting the air pressure in the car of the high-speed elevator is needed to provide a basis for adjusting the air pressure in the car.
Disclosure of Invention
In order to solve the problems in the prior art, the embodiment of the invention provides a detection method suitable for detecting the air pressure in a running car of a high-speed elevator, which can obtain a corrected air pressure value in the car based on an actually-measured air pressure value and an air pressure deviation, provide a basis for adjusting the air pressure in the car, and further improve the comfort level of passengers.
The embodiment of the invention provides a detection method suitable for detecting air pressure in a running car of a high-speed elevator, which comprises the following steps: acquiring standard parameters of the geographical position of the high-speed elevator, wherein the standard parameters comprise one or more of standard air pressure, temperature, relative humidity and gravity acceleration; under the conditions of light load and full load of the lift car, respectively measuring actually measured air pressure values in the lift car when the high-speed lift is at different travel heights, wherein the actually measured air pressure values comprise a first actually measured air pressure value measured under the condition of light load and a second actually measured air pressure value measured under the condition of full load; calculating the air pressure deviation generated in the measuring process according to the standard parameters; and correcting the first measured air pressure value and the second measured air pressure value according to the air pressure deviation to obtain a first corrected air pressure value in the lift car under the light load condition and a second corrected air pressure value in the lift car under the full load condition.
According to the embodiment of the invention, the actual measurement air pressure values of the car under the conditions of light load and full load are respectively measured, the air pressure deviation is calculated based on the standard parameters of the geographic position of the high-speed elevator, the actual measurement air pressure values are corrected according to the air pressure deviation, the corrected air pressure value in the car can be obtained more accurately, and the air pressure in the car is further accurately adjusted based on the corrected air pressure value, so that the discomfort of passengers when riding the high-speed elevator is relieved.
In some embodiments of the invention, the detection method further comprises: obtaining a reference cylinder by taking the center of the floor of the car as the center of a circle, the height value in the car as the height and a preset radius value as the radius; setting at least one test point in the reference cylinder; and when the elevator is lightly loaded, a detection instrument for measuring the air pressure is placed at the test point.
In some embodiments of the invention, the light load is that the number of testers in the car is less than 2, when there are 2 testers in the car, the 2 testers stand to keep the car substantially balanced, and the distance between the 2 testers and the detection instrument is greater than 150 mm.
In some embodiments of the invention, the load in the car is evenly distributed, the levelness of the floor of the car is within 2/1000mm, and a circular space with a diameter of the diagonal length of the detection instrument plus 300mm is left in the center of the car.
In some embodiments of the invention, the barometric pressure deviation is calculated according to the following equation: Δ P ═ ρ g Δ h; wherein Δ P is the air pressure deviation, ρ is the air density of the test point, g is the gravitational acceleration of the test point, and Δ h is the height difference between the detection instrument and the air pressure standard at the test point.
According to the embodiment of the invention, the air pressure deviation generated by the change of the geographic position in the measuring process of the detecting instrument is calculated, and the actually measured air pressure value is corrected based on the air pressure deviation, so that more accurate air pressure in the lift car can be obtained, and a basis is provided for the adjustment of the air pressure in the lift car.
In some embodiments of the invention, the detection method further comprises: respectively generating a first air pressure change diagram and a second air pressure change diagram according to the different stroke heights, the first corrected air pressure value and the second corrected air pressure value; and adjusting the air pressure in the car according to the relation between the first air pressure change diagram and the second air pressure change diagram and the deviation threshold value.
In some embodiments of the invention, adjusting the air pressure within the car according to the relationship between the first and second air pressure variation maps and the deviation threshold comprises: acquiring a light-load air pressure maximum value and a full-load air pressure maximum value in the first air pressure change diagram and the second air pressure change diagram; respectively acquiring a first air pressure deviation and a second air pressure deviation at the stroke height corresponding to the maximum light-load air pressure and the maximum full-load air pressure; adjusting the air pressure within the car when the first air pressure deviation or the second air pressure deviation is above the deviation threshold.
In the above embodiment of the present invention, when one of the first air pressure deviation and the second air pressure deviation at the stroke height corresponding to the maximum light-load air pressure and the maximum full-load air pressure in the case of light load and full load is higher than the deviation threshold, the air pressure in the car is adjusted, so that the air pressure change in the car can be reduced, and the discomfort of passengers when riding a high-speed elevator can be reduced.
In some embodiments of the invention, adjusting the air pressure within the car comprises: if the car system of the high-speed elevator is provided with a car internal air pressure balancing device, checking and adjusting the air pressure balancing device until the first air pressure deviation and the second air pressure deviation are lower than the deviation threshold value; if the car system of the high-speed elevator is not provided with a car internal air pressure balancing device, checking and adjusting the running speed of the high-speed elevator and the closing condition of the ventilation opening of the car until the first air pressure deviation and the second air pressure deviation are lower than the deviation threshold value.
In some embodiments of the invention, the measured air pressure within the car is measured separately at different travel heights of the high speed elevator in the up and down conditions of the high speed elevator.
In some embodiments of the invention, when the high-speed elevator has a plurality of operating speeds, measured air pressure values within the car at different travel heights of the high-speed elevator are measured at the plurality of operating speeds, respectively.
Therefore, according to the detection method suitable for detecting the air pressure in the running car of the high-speed elevator, provided by the embodiment of the invention, the actual measured air pressure values under the conditions of light load and full load of the car are respectively measured, the air pressure deviation is calculated based on the standard parameters of the geographical position of the high-speed elevator, the actual measured air pressure value is corrected according to the air pressure deviation, a more accurate corrected air pressure value in the car can be obtained, and the air pressure in the car is further adjusted based on the corrected air pressure value, so that the discomfort of passengers when riding the high-speed elevator is relieved.
Drawings
Fig. 1 is a schematic flow diagram of a detection method suitable for detecting air pressure in a running car of a high-speed elevator according to embodiment 1 of the present invention;
fig. 2 is a schematic flow diagram of a detection method suitable for detecting air pressure in a running car of a high-speed elevator according to embodiment 2 of the present invention;
fig. 3 is a schematic diagram of the distribution of test points and detection instruments in a car according to embodiment 2 of the present invention;
fig. 4 is a schematic view of the relationship between the measured air pressure value in the car and the measured air pressure value of the air pressure standard according to embodiment 2 of the present invention;
fig. 5 is a schematic view showing a change law of air pressure in a car during an ascending operation of an elevator according to an embodiment of the present invention;
fig. 6 is a schematic view showing a change law of air pressure in a car during a downward movement of an elevator according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of a detection method suitable for detecting air pressure in a cage for high-speed elevator running according to embodiment 3 of the present invention.
Detailed Description
Various aspects of the invention are described in detail below with reference to the figures and the detailed description. It will be understood by those skilled in the art that the various embodiments described below are illustrative only and are not intended to limit the scope of the present invention.
The invention provides a detection method suitable for detecting air pressure in a running car of a high-speed elevator. The detection method comprises the following steps: acquiring standard parameters of the geographical position of the high-speed elevator; respectively measuring actual measurement air pressure values in the elevator car when the high-speed elevator is at different travel heights under the conditions of light load and full load of the elevator car; calculating the air pressure deviation generated in the measuring process according to the standard parameters; and correcting the actually measured air pressure value according to the air pressure deviation to obtain a corrected air pressure value.
[ example 1 ]
Fig. 1 is a schematic flow chart of a detection method suitable for detecting air pressure in a cage of a high-speed elevator running according to embodiment 1 of the present invention.
As shown in fig. 1, in an embodiment of the present invention, the detection method may include: step S11, step S12, step S13, and step S14, which are described in detail below.
In step S11, standard parameters of the geographical location of the high-speed elevator are obtained, wherein the standard parameters include one or more of standard air pressure, temperature, relative humidity and gravity acceleration.
In step S12, measured air pressure values in the car at different travel heights of the high-speed elevator are measured under light load and full load conditions of the car, respectively, and the measured air pressure values include a first measured air pressure value measured under light load condition and a second measured air pressure value measured under full load condition. Wherein the light load is that the tester in the car is within 2 persons. Optionally, the measured air pressure value in the car is measured by a high-precision detecting instrument, for example, a designed portable special air pressure detecting instrument (-1.5 to +1.5mbar (25 ℃,750mbar)), the precision of which is 25 ℃, and the error at 750mbar is-1.5 to +1.5mbar, or other special air pressure detecting instruments.
In one embodiment, when there are 2 testers in the car, the 2 testers stand to keep the car substantially balanced, and the distance between the 2 testers and the detection instrument is greater than 150 mm.
In a further embodiment, the load within the car is evenly distributed, the levelness of the floor of the car is within 2/1000mm, and a circular space with a diameter of the diagonal length of the detection instrument plus 300mm is left in the center of the car.
In one embodiment, step S12 may measure the measured air pressure in the car at different travel heights for a light load and a full load condition of the high speed elevator in the up and down conditions of the high speed elevator, respectively.
In another embodiment, step S12 may measure the measured air pressure values in the car at different travel heights for a high-speed elevator at a plurality of operating speeds of the high-speed elevator, respectively at a light load and a full load. Alternatively, the operating speed of high-speed elevators includes, but is not limited to: 3m/s, 4m/s, 6m/s, 8m/s, 10m/s, etc.
In a further embodiment, step S12 may measure the measured air pressure values in the car at different travel heights of the high-speed elevator under different combination conditions consisting of a plurality of running speeds of the high-speed elevator, running states of ascending or descending, light load conditions and full load conditions.
In step S13, the deviation of the air pressure generated during the measurement is calculated based on the standard parameter.
In one embodiment, the air pressure deviation is calculated according to the following formula:
△P＝ρgΔh
wherein Δ P is the air pressure deviation, ρ is the air density of the test point, g is the gravitational acceleration of the test point, and Δ h is the height difference between the detection instrument and the air pressure standard at the test point. Through calculating the atmospheric pressure deviation that the change of the geographical position of high-speed elevator place produced to revise actual measurement atmospheric pressure value based on this atmospheric pressure deviation, can acquire more accurate car internal gas pressure, provide the basis for the atmospheric pressure adjustment in the car.
In step S14, the first measured air pressure and the second measured air pressure are corrected according to the air pressure deviation, and a first corrected air pressure value in the car under the light load condition and a second corrected air pressure value in the car under the full load condition are obtained.
By adopting the detection method of the embodiment of the invention, the actual measurement air pressure values of the lift car under different running conditions are respectively measured, the air pressure deviation is calculated based on the standard parameters of the geographic position of the high-speed elevator, the actual measurement air pressure values are corrected according to the air pressure deviation, the accurate corrected air pressure value in the lift car can be obtained, and the air pressure in the lift car is more accurately adjusted based on the corrected air pressure value, so that the discomfort of passengers when riding the high-speed elevator is relieved.
In one embodiment, prior to the aforementioned step S11, the position of the detection instrument is determined by: taking the center of the floor of a car of the high-speed elevator as a circle center, the height value in the car as the height and a preset radius value as the radius to obtain a reference cylinder; setting at least one test point in the reference cylinder; and when the elevator is lightly loaded, a detection instrument for measuring the air pressure is placed at the test point.
In a further embodiment, after the aforementioned step S14, generating a first air pressure variation graph and a second air pressure variation graph according to the different stroke heights and the first and second corrected air pressure values, respectively; and adjusting the air pressure in the car according to the relation between the first air pressure change diagram and the second air pressure change diagram and the deviation threshold value.
In an alternative embodiment, adjusting the air pressure inside the car according to the relationship between the first air pressure variation graph and the second air pressure variation graph and the deviation threshold may specifically include the steps of: acquiring a light-load air pressure maximum value and a full-load air pressure maximum value in the first air pressure change diagram and the second air pressure change diagram; respectively acquiring a first air pressure deviation and a second air pressure deviation at the stroke height corresponding to the maximum light-load air pressure and the maximum full-load air pressure; adjusting the air pressure within the car when the first air pressure deviation or the second air pressure deviation is above the deviation threshold.
Optionally, adjusting the air pressure in the car may include: when a car system of the high-speed elevator is provided with a car internal air pressure balancing device, checking and adjusting the air pressure balancing device until the first air pressure deviation and the second air pressure deviation are lower than the deviation threshold value; when the car system of the high-speed elevator is not provided with the car internal air pressure balancing device, the running speed of the high-speed elevator and the closing condition of the ventilation opening of the car are checked and adjusted until the first air pressure deviation and the second air pressure deviation are lower than the deviation threshold value.
When one of the first air pressure deviation and the second air pressure deviation at the stroke height corresponding to the maximum light-load air pressure and the maximum full-load air pressure under the light load and the full load is higher than the deviation threshold value, the air pressure in the lift car is adjusted, so that the air pressure change in the lift car can be reduced, and the discomfort of passengers when the passengers board a high-speed elevator is relieved.
[ example 2 ]
Fig. 2 is a schematic flow chart of a detection method suitable for detecting air pressure in a cage of a high-speed elevator running according to embodiment 2 of the present invention.
As shown in fig. 2, in an embodiment of the present invention, the detection method may include: step S21, step S22, step S23, step S24, step S25, and step S26, which are specifically described below.
In step S21, the measurement conditions of the device under test (elevator) are determined.
Specifically, the device under test is adjusted to satisfy the following measurement conditions:
a) and finishing assembly adjustment and operation according to an operation manual.
b) And adjusting the equipment to be tested to normal equipment working conditions.
c) Measurements were made under light and full load conditions, respectively. The light load means that the car contains 2 testers at most.
d) And starting to measure after the starting procedure of the tested device is completed. If the device under test can be operated at different speeds while transporting passengers, it is measured separately at all operating speeds.
e) When the tested device is measured, the change of the airflow outside the running of the car does not influence the measurement.
f) The fans and air conditioners in the car are turned off and all the machine equipment in the building where the equipment under test is located, as well as the adjacent elevators, are in normal service.
g) And respectively testing the air pressure data in the elevator car in the running process of a group of tested equipment at the running speed in normal working under the conditions of light load and full load of the elevator car, and taking the maximum value in each group of air pressure data.
In step S22, the locations of the test instrument and the test person are determined.
Firstly, determining the position of a detection instrument: selecting three test points in a cylinder range with the center of the car floor as the center of a circle, the height value in the car as the height and the radius of 0.1m, and placing a detection instrument on the three test points.
For example, as shown in fig. 3, three test points are selected as a point a, a point B and a point C, the point a is located at ± 0.10m from the bottom of the car, the point B is located at 1.0m ± 0.10m above the bottom of the car, the point C is located at ± 0.10m from the top of the car, and the detecting instruments placed at the three test points A, B, C are opposite to the main door of the car along the horizontal direction.
Secondly, determining the position of the tester:
(1) the car contains a maximum of 2 testers under light load, and when there are 2 testers in the car during measurement, the 2 testers have their warring positions to keep the car substantially balanced, and each tester is kept still and quiet during measurement. Meanwhile, in order to avoid the influence on the measurement due to the local deformation of the bottom of the car and the surface of the floor, a tester stands 150mm away from the air pressure measuring sensor.
(2) The load in the car is evenly distributed, the floor of the car is basically kept horizontal (namely the levelness of the floor of the car is kept within 2/1000 mm), and a circular space with the radius being half of the diagonal length of the detection instrument plus 150mm is reserved in the center of the car, so that the situation that the bottom of the car and the surface of the floor are locally deformed due to the fact that the load is too close to the detection instrument is avoided, and measuring accuracy is further influenced. For example, a detector with half the length of the diagonal of 150mm leaves a circular space in the center of the car with a radius of 300 mm.
In step S23, the measuring instrument measures a measured air pressure value based on the measurement condition and the positions of the detecting instrument and the tester. The method specifically comprises the following steps:
3.1) when the elevator is lightly loaded, placing an air pressure detection instrument at a test point;
3.2) observing a working indicator lamp of the air pressure detection instrument, and if the working indicator lamp is in a normally-on state, preparing to start detection;
3.3) inputting and measuring the parameters of the detecting instrument of the device to be detected: the method comprises the following steps of (1) enabling a tested device (an elevator) to be static at the bottommost layer, enabling the elevator to be in a standby state, and inputting local standard air pressure, temperature, relative humidity and gravity acceleration;
and 3.4) respectively acquiring the measured air pressure value in the elevator car at different travel heights under different measurement conditions. Wherein the measured air pressure changes with altitude are related to local standard air pressure, temperature, relative humidity and gravitational acceleration.
In step S24, a method of acquiring the maximum in-car air pressure value generated by the turbulent air flow is determined. Specifically, the data of the position corresponding to the actually measured air pressure is corrected through calculation, so that corrected air pressure values in the car generated by air turbulence at different height positions of the elevator are obtained, and the maximum value in the corrected air pressure values is obtained, namely the maximum air pressure value in the car generated by the air turbulence.
Atmospheric pressure refers to the pressure generated by the air column on the earth's surface, and changes with altitude. The floors of the high-speed elevator are 20 floors, 30 floors, 40 floors and even higher, and the air pressure in the elevator car changes along with the change of the height when the elevator car moves up and down in the hoistway. The air pressure deviation caused by different geographic position parameters in the test process of the air pressure detection instrument in the lift car can influence the actually measured air pressure value, so that the air pressure deviation of different geographic positions needs to be calculated in the actually measured process, and the actually measured air pressure value is corrected. The air pressure correction process takes local standard air pressure, temperature, relative humidity, gravitational acceleration and other factors into consideration.
In some embodiments, the method for correcting the air pressure in the large-stroke well at different geographic positions provided by the invention comprises the following steps:
(1) as shown in fig. 4, when the measured pressure P1 in the car is higher than the pressure P2 of the pressure gauge, Δ P is a positive value. When the measured air pressure value in the car is lower than the air pressure value of the air pressure standard device, the delta P is a negative value. The measured air pressure value in the car is calculated according to the formula P1 which is P2+ delta P.
(2) The air pressure deviation generated by the air pressure detecting instrument along with different geographical position changes is delta P, and the delta P is represented by a formula (1):
ΔP＝ρgΔh (1)
where ρ is the air density (kg/m) of the test point3) And g is the gravitational acceleration (m/s) of the test point2) And deltah is the height difference (m) between the (air pressure) detecting instrument and the air pressure standard at the test point.
From the formula (1), as long as the calibration site is fixed, the gravity acceleration g is a constant, and the height difference Δ h between the air pressure detection instrument and the air pressure standard can be intelligently read by the instrument (such as a distance sensor), so that only the air density needs to be calculated. The pressure-guiding medium generally used by the elevator is natural air, and the density of the natural air can be calculated by the following formula (2):
in the formula (2), P is a gas pressure (P) at the time of detectiona) (ii) a T is the thermodynamic temperature (K); h is relative humidity (RH%); pvIs the saturated water pressure (P)a). Wherein the saturated water pressure with respect to the water surface may be calculated by the following formula (3):
the natural air density ρ is given by equations (2) and (3):
substituting equation (4) into equation (1) yields:
and calculating to obtain the air pressure deviation delta P generated by the air pressure detection instrument along with different geographical position changes based on the formulas (1) to (5).
(3) The corrected air pressure value is the sum of the actually measured air pressure value and the air pressure deviation, and the maximum value of the corrected air pressure values corresponding to the group of actually measured data is selected as the maximum air pressure value in the lift car generated by the gas turbulence.
In step S25, the operating state of the device under test is determined, and air pressure data is collected when the operating state meets the requirements. The method specifically comprises the following steps:
5.1) setting the lift car of the tested device (elevator) to be in an ascending mode or a descending mode;
5.2) confirming whether the door of the elevator is closed or not, and if not, continuing to confirm until the door is closed;
5.3) confirming whether the elevator starts to run or not, and if the elevator does not start to run, continuing to confirm until the elevator starts to run;
5.4) the whole process of the test comprises the following steps: door closing procedure at the departure terminal, full procedure run of the elevator from terminal to terminal, door opening procedure and landing procedure of the elevator to terminal, and adding 0.5s at each end of the run. Namely, the measuring instrument starts to work (trigger work) 0.5s before the elevator starts to close the door at the latest, and stops working (trigger stop) 0.5s after the elevator stop end station completely opens the door at the earliest, specifically according to the operation requirements of the measuring instrument. Also, abnormal data may be invalidated by a re-measurement where the test is deemed to be operating abnormally due to an abnormal or unexpected event.
In step S26, it is determined whether or not the deviation of the air pressure corresponding to the maximum air pressure value in the car obtained from the collected air pressure data exceeds a deviation threshold value, and the air pressure in the car is adjusted when the deviation exceeds the deviation threshold value. The method specifically comprises the following steps:
6.1) confirming whether the air pressure deviation corresponding to the maximum air pressure value (air pressure peak value) in the lift car is always within the deviation threshold range, if the deviation is within the deviation threshold delta y, the measured air pressure value meets the design requirement, and the air pressure in the lift car does not need to be adjusted; if the deviation threshold value delta y is exceeded, the change of the air pressure in the lift car is over large, the requirement is not met, and the air pressure in the lift car needs to be adjusted;
fig. 5 is a schematic view showing a change law of air pressure in a car during an ascending operation of an elevator according to an embodiment of the present invention, wherein yOn the upper partAir pressure value, y 'of elevator at test initial position of certain speed'On the upper partThe air pressure value of the elevator at the speed at the test ending position; y1On the upper partBarometric deviation value of elevator at certain speed at test initial position, y 1'On the upper partThe deviation value of the air pressure of the elevator at the speed at the test ending position; y2On the upper partDeviation value of air pressure at test initial position, y2 'for elevator of certain speed'On the upper partThe deviation value of the air pressure of the elevator at the speed at the test ending position; t1On the upper part、T2On the upper partThe curve shows a speed variation process of the elevator car in the test process from uniform acceleration motion to uniform velocity motion and then to uniform deceleration motion.
Fig. 6 is a schematic view showing a change law of air pressure in a car during a downward movement of an elevator according to an embodiment of the present invention, wherein yLower partAir pressure value, y 'of elevator at test initial position of certain speed'Lower partThe air pressure value of the elevator at the speed at the test ending position; y1Lower partBarometric deviation value of elevator at certain speed at test initial position, y 1'Lower partThe deviation value of the air pressure of the elevator at the speed at the test ending position; y2Lower partDeviation value of air pressure at test initial position, y2 'for elevator of certain speed'Lower partThe deviation value of the air pressure of the elevator at the speed at the test ending position; t1Lower part、T2Lower partThe curve shows a speed variation process of the elevator car in the test process from uniform acceleration motion to uniform velocity motion and then to uniform deceleration motion.
6.2) if the car system is provided with the car internal air pressure balancing device, checking and adjusting the air pressure balancing device until the value of the change of the car internal air pressure in the ascending process of the elevator is detected to be within a reasonable range (not higher than a deviation threshold value delta y);
6.3) if the car system is not provided with the car internal air pressure balancing device, checking and adjusting other parameters (such as running speed, whether a vent is closed and the like) until the value of the car internal air pressure change in the ascending process of the elevator is detected to be within a reasonable range (not higher than a deviation threshold value delta y);
6.4) after the test is finished, pressing a stop button or waiting for the work indicator lamp to automatically turn to be normally on, and then formally finishing a group of tests.
6.5) testing the air pressure values of the other two positions again according to the flow;
6.6) testing the air pressure values at three positions under the condition that the load is uniformly distributed in the lift car.
By adopting the detection method of the embodiment of the invention, the actual measurement air pressure values of the lift car under different running conditions are respectively measured, the air pressure deviation is calculated based on the standard parameters of the geographic position of the high-speed elevator, and the actual measurement air pressure values are corrected according to the air pressure deviation, so that the accurate corrected air pressure value in the lift car and the maximum air pressure value in the lift car can be obtained, the air pressure in the lift car is more accurately adjusted based on the relation between the maximum air pressure value in the lift car and the deviation threshold value, and the comfort level of passengers is improved.
[ example 3 ]
Fig. 7 is a schematic flow chart of a detection method suitable for detecting air pressure in a cage for high-speed elevator running according to embodiment 3 of the present invention.
As shown in fig. 7, in an embodiment of the present invention, the detection method may include: step S701, step S702, step S703, step S704, step S705, step S706, step S707, step S708, step S709, step S710, and step S711, which will be described in detail below.
Step S701, setting parameters of a detection instrument for measuring the air pressure of the elevator: local standard barometric pressure, temperature, relative humidity, and gravitational acceleration.
Step S702, determining that the elevator is in an ascending mode or a descending mode.
And step S703, judging whether the elevator door is closed, if not, continuing to judge until the elevator door is closed, and executing step S704 after the elevator door is closed.
And step S704, judging whether the elevator starts to operate, if not, continuing to judge until the elevator starts to operate, and executing step S705.
Step S705 measures the air pressure in the elevator car.
Step S706, determining whether the measured air pressure is less than a preset threshold, ending the measurement when the measured air pressure is less than the preset threshold, and executing step S707 when the measured air pressure is greater than or equal to the preset threshold. The air pressure determined by comparing with the preset threshold is the corrected air pressure, and the correction method is the same as the correction method in embodiment 1 or embodiment 2, and details are not repeated here.
And step S707, judging whether an elevator air pressure balancing device is installed in the elevator car, executing step S708 if the elevator air pressure balancing device is installed, and executing step S709 if the elevator air pressure balancing device is not installed.
Step S708, adjusting the elevator air pressure balance device, and after the adjustment is finished, step S710 is executed.
In step S709, the cause is searched and solved, for example, by adjusting the operation speed of the elevator, adjusting the ventilation opening or the vent hole in the car, or the like, and step S710 is executed after the adjustment is completed.
Step S710 is executed after the air pressure value in the car is measured again and a new air pressure value is measured.
Step S711, determining whether the measured new air pressure value is smaller than a preset threshold, ending the measurement when the measured new air pressure value is smaller than the preset threshold, and executing step S707 when the measured new air pressure value is greater than or equal to the preset threshold.
By adopting the detection method of the embodiment of the invention, whether the air pressure in the elevator car is adjusted or not is determined by judging the relation between the measured air pressure in the elevator car and the preset threshold value, so that the discomfort of passengers when taking a high-speed elevator can be relieved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.
Claims (10)
1. A method for detecting air pressure in a cab of a high-speed elevator, the method comprising:
acquiring standard parameters of the geographical position of the high-speed elevator, wherein the standard parameters comprise one or more of standard air pressure, temperature, relative humidity and gravity acceleration;
under the conditions of light load and full load of the lift car, respectively measuring actually measured air pressure values in the lift car when the high-speed lift is at different travel heights, wherein the actually measured air pressure values comprise a first actually measured air pressure value measured under the condition of light load and a second actually measured air pressure value measured under the condition of full load;
calculating the air pressure deviation generated in the measuring process according to the standard parameters;
and correcting the first measured air pressure value and the second measured air pressure value according to the air pressure deviation to obtain a first corrected air pressure value in the lift car under the light load condition and a second corrected air pressure value in the lift car under the full load condition.
2. The detection method of claim 1, further comprising:
obtaining a reference cylinder by taking the center of the floor of the car as the center of a circle, the height value in the car as the height and a preset radius value as the radius;
setting at least one test point in the reference cylinder;
and when the elevator is lightly loaded, a detection instrument for measuring the air pressure is placed at the test point.
3. The inspection method of claim 2, wherein the light load is within 2 persons of the tester in the car, when there are 2 testers in the car, the 2 testers stand to keep the car substantially balanced, and the distance between the 2 testers and the inspection instrument is greater than 150 mm.
4. The inspection method of claim 2, wherein the load in the car is uniformly distributed, the levelness of the floor of the car is within 2/1000mm, and a circular space having a diameter of the diagonal length of the inspection instrument plus 300mm is left in the center of the car.
5. The detection method of claim 2, wherein the air pressure deviation is calculated according to the following formula:
△P＝ρgΔh
wherein Δ P is the air pressure deviation, ρ is the air density of the test point, g is the gravitational acceleration of the test point, and Δ h is the height difference between the detection instrument and the air pressure standard at the test point.
6. The detection method of claim 1, further comprising:
respectively generating a first air pressure change diagram and a second air pressure change diagram according to the different stroke heights, the first corrected air pressure value and the second corrected air pressure value;
and adjusting the air pressure in the car according to the relation between the first air pressure change diagram and the second air pressure change diagram and the deviation threshold value.
7. The detection method of claim 6, wherein adjusting the air pressure within the car based on the relationship between the first and second air pressure variation maps and a deviation threshold comprises:
acquiring a light-load air pressure maximum value and a full-load air pressure maximum value in the first air pressure change diagram and the second air pressure change diagram;
respectively acquiring a first air pressure deviation and a second air pressure deviation at the stroke height corresponding to the maximum light-load air pressure and the maximum full-load air pressure;
adjusting the air pressure within the car when the first air pressure deviation or the second air pressure deviation is above the deviation threshold.
8. The detection method of claim 7, wherein adjusting the air pressure within the car comprises:
if the car system of the high-speed elevator is provided with a car internal air pressure balancing device, checking and adjusting the air pressure balancing device until the first air pressure deviation and the second air pressure deviation are lower than the deviation threshold value;
if the car system of the high-speed elevator is not provided with a car internal air pressure balancing device, checking and adjusting the running speed of the high-speed elevator and the closing condition of the ventilation opening of the car until the first air pressure deviation and the second air pressure deviation are lower than the deviation threshold value.
9. The detection method according to claim 1,
and respectively measuring the measured air pressure in the elevator car when the high-speed elevator is at different travel heights under the ascending and descending conditions of the high-speed elevator.
10. The detection method according to claim 1,
when the high-speed elevator has a plurality of running speeds, measured air pressure values in the elevator car at different travel heights of the high-speed elevator are measured at the running speeds respectively.
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